/*
 * Copyright 2010 Kevin L'Huillier <klhuillier@gmail.com>
 * 
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not
 * use this file except in compliance with the License. You may obtain a copy of
 * the License at
 * 
 * http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
 * License for the specific language governing permissions and limitations under
 * the License.
 */

package org.lhuillier.pwsafe.io.codec;


import org.lhuillier.pwsafe.io.RawDb;
import org.lhuillier.pwsafe.model.Database;
import org.lhuillier.pwsafe.model.RawField;
import com.google.inject.Inject;


class DbVersionConverter implements HeaderConverter {
    private static final byte TYPE_ID = 0x00;
    private final BinConverter binConv;

    @Inject
    DbVersionConverter(BinConverter binConv) {
        this.binConv = binConv;
    }

    @Override
    public byte handledTypeId() {
        return TYPE_ID;
    }

    @Override
    public void toDb(RawField raw, Database db) {
        db.setVersion(binConv.readShort(raw.getValue()));
    }

    @Override
    public void toRaw(Database db, RawDb raw) {
        Short version = db.getVersion();
        if (version != null) {
            raw.addHeader(new RawField(TYPE_ID, binConv.writeShort(version)));
        }
    }
}
